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Variable capacitor
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Patent number 5,867,360
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Issue date Feb 2, 1999
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Murata Manufacturing Co., Ltd.
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Hiroyuki Kishishita
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H01 - BASIC ELECTRIC ELEMENTS
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Variable capacitor
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Patent number 4,408,253
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Issue date Oct 4, 1983
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Matsushita Electric Industrial Co., Ltd.
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Atsushi Nishino
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H01 - BASIC ELECTRIC ELEMENTS
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Precision linear tuning circuit
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Patent number 4,375,626
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Issue date Mar 1, 1983
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The United States of America as represented by the National Security Agency
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John J. Hudak
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H01 - BASIC ELECTRIC ELEMENTS
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3700983
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Patent number 3,700,983
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Issue date Oct 24, 1972
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H01 - BASIC ELECTRIC ELEMENTS